(19)
(11) EP 1 335 407 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.10.2004 Bulletin 2004/42

(43) Date of publication A2:
13.08.2003 Bulletin 2003/33

(21) Application number: 02016179.0

(22) Date of filing: 20.07.2002
(51) International Patent Classification (IPC)7: H01J 65/04, H01J 61/54, H01J 61/12
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 17.01.2002 KR 2002002807

(71) Applicant: LG ELECTRONICS INC.
Seoul 150-721 (KR)

(72) Inventors:
  • Choi, Joon-Sik
    Seongdong-Gu, Seoul (KR)
  • Jeon, Yong-Seog
    Gyeonggi-Do (KR)
  • Jeon, Hyo-Sik
    Gyeonggi-Do (KR)
  • Kim, Hyun-Jung
    Nowon-Gu, Seoul (KR)
  • Lee, Ji-Yong
    Gyeonggi-do (KR)
  • Park, Byeong-Ju
    Seoul (KR)

(74) Representative: Schippan, Ralph, Dr.-Ing. 
COHAUSZ & FLORACK Patent- und Rechtsanwälte Bleichstrasse 14
40211 Düsseldorf
40211 Düsseldorf (DE)

   


(54) Electrodeless lighting system and bulb therefor


(57) An electrodeless lighting system, including a waveguide (140) having an outlet (170) which is installed being protruded from the inside of a casing (110) to the outside of the casing, for transmitting a microwave generated in the magnetron (130), a resonator (150) fixed at the outer side of the outlet (170) of the waveguide (140), for forming a resonant region in which the microwave is resonated, a bulb (160) for generating light as plasma is generated by an electric field which is formed inside the resonator and a lighting promoting means (300) positioned inside the bulb, for concentrating the electric field so that light is rapidly emitted when the microwave is applied, can achieve convenience of a user and increase reliability of lighting as the bulb (160) rapidly emits light.






Search report